查吾拉牦牛体质量与体尺相关性分析  

Correlation Analysis Between Body Weight and Body Size of Chawula Yak

作　　者：保吉财 翁浩博 张品林 祁发生 珠姆 李明 喇振兴 旦增顿旦 次仁郎杰 次旦多吉 其米卓嘎 张勇 BAO Jicai;WENG Haobo;ZHANG Pinlin;QI Fasheng;Zhumu;LI Ming;LA Zhenxing;Danzengdunzhu;Cirenlangjie;Cidanduoji;Qimizhuoga;ZHANG Yong(Naqu Agriculture and Animal Husbandry(Grassland)Science and Technology Research and Promotion Center,Tibet Naqu 852000,China;Naqu Agriculture and Rural Affairs Bureau,Tibet Naqu 852000,China)

机构地区：[1]西藏自治区那曲市农牧业(草业)科技研究推广中心,西藏那曲852000 [2]西藏自治区那曲市农业农村局,西藏那曲852000

出　　处：《西藏农业科技》2024年第4期78-81,共4页Tibet Journal of Agricultural Sciences

基　　金：2021年那曲市重点研发及转化项目:牦牛杂交改良研究项目(NQKJ-2021-04)。

摘　　要：为了探究查吾拉牦牛体质量与体尺指标之间的相关性,利用SPSS 23.0数据统计分析软件对37头成年查吾拉牦牛体质量与体尺数据进行描述性统计、相关性分析和多元线性逐步回归分析。结果显示,查吾拉牦牛体质量变异系数最大(22.25%),体质量与7项体尺指标均存在相关性,其中体质量与体高、体直长、体斜长、胸围、背高、腰高之间相关性达到极显著水平(p<0.01),体质量与管围之间相关性达到显著水平(P<0.05),得出最优回归方程为:Y=-485.969+1.996X_(4)+1.765X_(3)+1.397X1(R^(2)=0.879,p<0.01)。To explore the correlation between body weight and body size indicators of Chawula yak.SPSS 23.0 data statistical analysis software was used to conduct descriptive statistics,correlation analysis and multiple linear stepwise regression analysis on the weight and body size data of 37 adult Chawula yaks.The body weight of Chawula yak has the largest coefficient of variation(22.25%),and has correlations with other seven body size indicators.The correlation between body weight and body height,body straight length,body oblique length,chest circumference,back height,waist height reached an extremely significant level(p<0.01),while the correlation between body weight and tube circumference reached a significant level(P<0.05).The optimal regression equation was weight=-485.969+1.996 chest circumference+1.765 body obliquely long+1.397 body height(R^(2)=0.879,p<0.01).

关 键 词：查吾拉牦牛 体质量与体尺 逐步回归分析 

分 类 号：S823.85[农业科学—畜牧学]